121197570 has 96 divisors (see below), whose sum is σ = 323362368. Its totient is φ = 28899072.

The previous prime is 121197547. The next prime is 121197577. The reversal of 121197570 is 75791121.

It is not an unprimeable number, because it can be changed into a prime (121197577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 533797 + ... + 534023.

It is an arithmetic number, because the mean of its divisors is an integer number (3368358).

Almost surely, 2^121197570 is an apocalyptic number.

121197570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121197570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161681184).

121197570 is an abundant number, since it is smaller than the sum of its proper divisors (202164798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121197570 is a wasteful number, since it uses less digits than its factorization.

121197570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 33.

The square root of 121197570 is about 11008.9767916914. The cubic root of 121197570 is about 494.8777986274.

The spelling of 121197570 in words is "one hundred twenty-one million, one hundred ninety-seven thousand, five hundred seventy".